12512451451 has 4 divisors (see below), whose sum is σ = 12592148752. Its totient is φ = 12432754152.

The previous prime is 12512451359. The next prime is 12512451487. The reversal of 12512451451 is 15415421521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12512451451 - 2⁹ = 12512450939 is a prime.

It is a super-2 number, since 2×12512451451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512451551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39848415 + ... + 39848728.

It is an arithmetic number, because the mean of its divisors is an integer number (3148037188).

Almost surely, 2^12512451451 is an apocalyptic number.

12512451451 is a deficient number, since it is larger than the sum of its proper divisors (79697301).

12512451451 is an equidigital number, since it uses as much as digits as its factorization.

12512451451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79697300.

The product of its digits is 8000, while the sum is 31.

Adding to 12512451451 its reverse (15415421521), we get a palindrome (27927872972).

The spelling of 12512451451 in words is "twelve billion, five hundred twelve million, four hundred fifty-one thousand, four hundred fifty-one".